Dad was a Lieutenant Colonel in the Army Corps of Engineers. Mom & Dad got married at Ft. Lewis Washington after the war, and his men decorated this earth mover as their "carriage" from the chapel to the reception. This is a colorized black and white, and I especially like how they drew in a rainbow in the background.
This is a picture of my grandparents' wedding in 1949. Although they have been divorced for nearly 40 years, they both died in 2011, only a half year apart.
Thank you for sharing this story and great photo with us! At the risk of sounding irreverent, I'm pretty sure I know what your grandfather was thinking when this photo was taken.