LEGO Military MOCs
Military vehicles in LEGO with free instructions: the M1 Abrams tank, the battleship USS Missouri and the F-22 and F-35 fighter jets. LEGO doesn't make military sets, so each is a fan-designed MOC in standard LEGO pieces with 3D steps and a full parts list.
Unofficial fan builds; the vehicle names belong to their makers.

Building guideUSS Missouri Battleship198 pieces · 16 steps

Building guideM1 Abrams Tank119 pieces · 11 steps

Building guideF-35 Lightning II163 pieces · 15 steps

Building guideF-22 Raptor210 pieces · 18 steps
Questions
Does LEGO make tanks?
No. LEGO doesn't make modern military sets. These are free fan-made MOCs from standard bricks and plates, with their own instructions.
Can I ask for another tank or ship?
Yes. Type it into "Ask for any build" and Mister Blocks designs it with step-by-step instructions.