To all interested parties, A.I.R. is the initials representing Australian Infantry Regiment. This unit was formed in 1901 after Federation to join the Infantry units of the colonies together. South Australian infantry battalions became the 10th Australian Infantry Regiment consisting of 3 battalions. Hope this information helps solve the mystery, which is now no longer a mystery Best Regards Paul Kinney _________________________________________________________________ Add photos to your e-mail with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail