4 years as a medic in the US Army (with a year of that spent in Germany), and then a further 2 in the California Army National Guard in 1-185 AR. Did one tour of duty in Iraq* (as my profile pic shows). Alas, I did not get to play with all the fun toys.
*2004, OIF2. Aka, the days where "up-armored humvees" meant strapping some sandbags to the hood and stacking some more on the floorboards.
(Not me in this photo).