"req_military" means a hull is sold *only* on military submarkets.
Was there ever a bug with this?
I have added this to several ships and this does not seem to be the case. Iirc I'm on RC12. They are still showing up in both the open market and black markets often as pristine hulls.
Paragon,archean_paragon,Battleship,High Tech,archean_highenergyfocus,31,40000,2000,50000,30000,1350,525,4,40,20,25,4,10,3500,FRONT,,360,0.7,0.6,,,450,1000,500,200,8,50,7,600000,5,5,900,0.5,42,10,,,,,,,,"archean_ultra_rare_bp, no_autofit, req_military, hist3t",0.1,0.6,4,6,,6
Astral,archean_astral,Supercarrier,High Tech,archean_fortressshield,29,30000,800,40000,15000,950,500,10,20,20,25,4,10,3000,FRONT,,360,0.8,0.6,,,350,1000,450,300,7,150,7,500000,7,7,820,0.25,38,10,,,,,,,CARRIER,"archean_ultra_rare_bp, no_autofit, req_military",0.1,0.6,3,4,,2
Aurora,archean_aurora,Cruiser,High Tech,archean_highenergyfocus,13,14000,800,22000,18000,620,230,2,60,40,40,15,13,1800,FRONT,,360,0.6,0.6,,,75,200,100,120,4,50,7,200000,8,8,680,0.5,17,5,,,,,,,,"rare_bp, archean_tritachyon_bp, no_autofit, req_military",0.35,0.6,2,3,,13
Tempest,archean_tempest,Frigate,High Tech,archean_flarelauncher_active,6,5000,200,9000,2813,380,50,1,100,200,175,50,110,200,OMNI,,120,0.8,0.85,,,10,25,40,15,1,10,10,36000,12,12,450,1,6,1,,,,,,,,"rare_bp, archean_tritachyon_bp, no_autofit, req_military, hist1t",0.33,0.5,2,2,,24
*EDIT*
I updated to RC15 and reproduced this in vanilla. I added the tag to the Wolf, Wolf(H), Enforcer, Eagle, Lasher, and Brawler. They also show up in the black market. They do seem to be a bit rarer.