Thought I'd share my small collection. From newest to oldest.
First the Victorinox Journey 1884 Automatic. Got this one not too long ago, love the blue and being able to see the movement is pretty cool.
Next the Marathon 41mm GSAR Diver's Automatic. Got this one while in Afghanistan 2006. Some how my Platoon Sargeant got 3-4 of these through the supply channel and ended up giving one to me. Absolute tank of a watch, has been knocked around and beat up. Has an ETA movement and tritium vials at each hour and on the minute and hour hands.
Finally the Citizen Eco Drive. Pretty cool watch, solar powered, battery doesn't quite hold a charge like it used to though.