Ukrainian infantry soldiers from the 156th Brigade train at a snow-covered training ground in Kharkiv.Diego Herrera Carcedo/Anadolu via Getty ImagesUkraine is looking to draft a law by the end of 2026 that will legalize postwar mercenary work.It could help its hundreds of thousands of soldiers turn their battlefield experience into careers.Ukraine is estimated to have 880,000 to 1 million troops, or at least 6% of its workforce.Ukraine is moving…