Which historic military sites have been the most memorable for you?

I have visited many battlefields around the world. No battlefield affected me as much as visiting the site of a concentration camp in Poland.

I think the National Memorial Cemetery of the Pacific located at Punchbowl Crater in Honolulu, Hawaii

Arlington National Cemetery for tranquil beauty and solemn reminder of supreme sacrifice (particularly the Tomb of the Unknown Soldier), battleship USS Iowa (BB-61) for sheer cool points.

PEARL HARBOR & BATTLESHIP ROW.

I don’t know if you’d consider it a military site. But one of the most memorable places I’ve worked at, is the site in Los Alamos New Mexico where they built the nukes they dropped in Hiroshima and Nagasaki.

Castillo de San Marcos and Fort McHenry.

I've been to many, but the one that I thought was the coolest would have to be Trinity site, where the first atomic bomb was tested. Got to see it when I was TDY to White Sands Missile Range in the early 90s.

July 4th 1991, will always be a proud moment for me!

Little Bighorn. After listening to an audiobook on the subject while driving cross country, I got to the site and was able to piece together the movements and locations of various invidents (with the Nationa Park Service map). A few things stood out to me: 1) the loss was entirely the fault of the officers (poor training of the soldiers, bad relationships between them, cowardice, a willingness to leave their colleagues and the soldiers to their fate) and 2) how ill equipped the Native Americans were on every level to deal with Europeans--I understand defending your way of life, but there was never even a chance.

I have to say I have been to Gettysburg several times. The first time I found the battery position on 3 July, 1863 of the Norfolk Light Artillery Blues, the ancestor of 1/111 FA, VaARNG, in which I served for 12 years. I was amazed to find that the NLAB lost more members, both human and equine, on 4 July during the retreat, as they were part of the rear guard,
The second memorable stop was on 3 July on my way to Fort Indiantown Gap and I stopped and went to the Stone Wall and there, by the marker for the 23rd NC Infantry was a cluster of cornflowers. No idea who left them, but I had to salute.