British self propelled gun had ecclesiastical names. The last one, the AS-90 was unofficially called the 'choirboy' because of being buggered by Vickers.
Caption - October 1942. The Consolidated Aircraft Corp. plant in Fort Worth, Texas. "Production. Halfway down the final line of a Western aircraft plant at which B-24 bombers and C-87 transports are made. This new transport, an adaptation of the B-24 bomber, is known as the C-87 and carries one of the greatest human or cargo loads of any plane now in mass production. It is built in a plant equipped with one of the best air conditioning and fluorescent lighting systems in the country." Photo by Howard Hollem for the Office of War Information.
"... What type grenade is the wounded man carrying on his trousers?"
Referred to as 'egg' grenade as opposed to 'stick' grenade or potato masher, IIRC.