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                    | 1943 | 
                  
                    | 1 February  | 
 | 801st Engineer Aviation Battalion activated at Davis Monthon Field, Tucson Arizona;Second Lieutenant Arthur F. Paulsen, C.E., commanding; consisting of 37 enlisted men
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                    | 11 February |   | Captain Erland L. Curtis, C.E. takes command 
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                    | 2 March |   | Battalion leaves by train for Gowen Field, Idaho 
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                    | 4 March |   | Major Ralph C. Brown, C.E. takes command Battalion consists of 28 officers and 63 enlisted men
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                    |  18 April  |   | Flood control activities on Boise River 
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                    | 30 June |   | Survey party of one officer and eight enlisted men leave for Wendover Field, Utah
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                    | July 20 |   | Lieutenants Guldermam and Moffatt take 100 men to Wendover field to pave taxiways 
                      and landing strips 
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                    | 22 July |   | Battalion moves to Snake River bivouac 
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                    |  24 July |   | T/5 Maurice Halbruner and Pvt. Andrew Micelli drown in Snake River 
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                    | 5 August  |   | Lt. Col. Phillip J. Galanti, C.E. takes command 
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                    | 24 August |   | The Wendover field detachment returns 
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                    | 30 August  |   | Runway C completed at Melba Bombing Range 
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                    | 3 September |   | Dedication ceremonies for Runway C 
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                    | 10 October |   | Battalion field day in Nampa 
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                    | 15 October |   | Runway D completed at Melba Bombing Rang | 
                  
                    | 23 October  |   | Battalion returns to Gowen Field 
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                    | 11 November  |   | Battalion participates in Armistice Day parade in Boise 
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                    | November |   | Company parties in Boise 
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                    | 18 December  |   | Battalion receives notification to ready for transport to Port of Embarkation 
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                    |  20 December  |   | Battalion  leaves for east coast on two trains at 1700 and 2000 hours 
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                    | 25 December  |   | Christmas dinner on trains 
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                    | 26 December  |   | Battalion arrives Camp Patrick Henry, Virginia for overseas processing and preparation
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                    | 1944                       | 
                  
                    | January 3 |   | Most of battalion sails from Hampton Roads in convoy UGS-29 on John Clark,LST44 and LST228
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                    | 17 January |   | Battalion anchors in Angra harbor, Azores 
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                    | 19 January  |   | Severe storm causes LST228 to ground on rocky reef 
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                    | 20 January  |   | Battalion finishes setting up camp 
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                    | 21 January  |   | Second storm causes fire on LST228; vital heavy equipment is lost 
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                    | 22 January  |   | H&S company mess begins feeding battalion American rations 
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                    | 1 February |   | Gideon Wells arrives with remainder of battalion 
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                    | 3 February  |   | Men from Gideon Wells land and join remainder of battalion 
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                    | 8 February  |   | Quarantine ends; first passes to Praia 
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                    | 9 February  |   | Electric generator provides camp with electricity 
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                    | February |   | Work begins on runways, tank farm and contonment, to continue for next nine months
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                    | 15 March  |   | Emergency Runway A ready for use 
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                    | 17 April |   | Daily truck convoys to Angra begin for liberty men 
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                    | June
 |   | 600 Allied aircraft pass through Azores during the mont | 
                  
                    | 14 October  |   | Hurricane strikes Azores
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                    | 5 November  |   | Group leaves by air on furlough for States 
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                    | 30 November  |   | Last of three runways completed 
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                    | 1945                         | 
                  
                    | 7 February |   | 801st was awarded the Meritorious Service Unit Award for "superior performance of duty in the performance of an exceptionally difficult task"                     | 
                  
                    | 23 February |   | Battalion boards William S. Evarts
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                    | 25 February  |   | William S. Evarts weighs anchor for the States 
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                    | 10 March |   | William S. Evarts docks in Hampton Roads 
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                    | 11 March  |   | 30 days leave (plus travel time) begins 
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                    | 21-22 April  |   | 801st reforms at Geiger Field, Spokane, Washington 
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                    | 28 April |   | 801st takes first place in  base parade 
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                    | 1 May  |   | Bronze service star awarded battalion personnel from Azores 
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                    | 19 May |   | War Bond show in Cheney, Washington 
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                    | 24 May  |   | Battalion again takes first place in base parade 
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                    | 26 May  |   | War Bond show in Latah 
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                    | 28 May  |   | War Bond show in Spokane 
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                    | 30 May  |   | Battalion marches in Spokane Memorial Day parade 
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                    | 15 June |   | Live fire exercises at Yakima Gunnery Range 
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                    | 6 July |   | Battalion boards trains for Seattle 
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                    | 7 July  |   | Battalion arrives Fort Lawton, Seattle, Washington 
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                    | 16 July |   | Part of battalion boards LSTs 205, 243, 731 and 790;convoy sets sail at 1700 hours
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                    | 28 July  |   | LST convoy arrives Pearl Harbor 
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                    | 6 August  |   | Remainder of battalion boards USS Pondera in Seattle; she sets sail at 1615 hours
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                    | 12 August |   | LST convoy reaches Eniwetok 
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                    | 14 August  |   | LST convoy sets sail for Saipan
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                    | 18 August  |   | LST convoy reaches Saipan
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                    | 19 August  |   | USS Pondera arrives Eniwetok
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                    | 25 August  |   | USS Pondera arrives Ulithi
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                    | 29 August  |   | LST convoy sets off for Okinawa 
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                    | 3 September  |   | LST convoy reaches Okinawa 
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                    | 5 September  |   | USS Pondera makes side trip to Guam
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                    | 7 September  |   | Men unload from LST convoyUSS Pondera sets sail from Ulithi for Okinawa
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                    | 12 September  |   | USS Pondera arrives Okinawa
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                    | 13 September  |   | Advance party from USS Pondera go ashore 
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                    | 14 September  |   | Remainder of men on USS Pondera unload
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                    | 7 October  |   | Typhoon Louise | 
                  
                    | 14 December  |   | 801st Deactivated
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