USS A-7

After Marcus and his men had battled the blaze, he ordered the crew topside and into the boats that had been summoned alongside. The last man to emerge from the interior of the crippled submersible, Marcus sent up distress signals to the nearby monitor Monadnock and then took the helm himself in an attempt to beach the ship. He refused medical treatment until all his men had been attended to (six later died) and had to be ordered to leave his post. The gallant Marcus died the next day 25 July 1917, of the effects of the explosion and fire that had ravaged his command. The Navy recognized this young officer's selfless heroism in naming a ship, Marcus (Destroyer No. 321), in his honor.
The men listed below are the entire
crew:
EMC J.M. Currie
MM2 I.P. Hixon
GM2 Otho Hopewell
MM1 J.A. Kunz
MM1 Harold H. Lang
Ltjg Arnold Marcus