"Aggie Boy" M1918 155mm heavy gun being towed by the Caterpillar tractor in standard use during the period. The gun is followed by a heavy truck for supplies and ammunition. Also of note is the WWI era motorcycle with sidecar and a cadet watching the parade. Photo shows the "latest" equipment assigned to the new artillery training battalion on OAC beginning just after WWI. The WWI vintage US Army truck following is the "4WD truck" that was manufactured by Four Wheel Drive Co. in Clintonville, WI.
Aggie Boy was the name given to the heavy artillery training piece assigned to OAC in the 1920s. This is detailed view of the M1918 155mm Howitzer, a French design from WWI. Cadet leaning on gun carriage at right. The west side of the Armory (McAlexander Fieldhouse) in background. "Aggie Boy" has been hand painted in black on the barrel of the artillery piece.