In nine months of brutal fighting, the army of the pro-Russian Donetsk People’s Republic in eastern Ukraine’s Donbas region has buried or sent to the hospital as many men as it had in its entire pre-war army. The separatist DPR began Russia’s wider war on Ukraine in February with around 20,000 men in six light infantry brigades. By November, the army had lost 3,746 killed in action and 15,794 wounded in action, according to the DPR’s ombudsman. That’s 19,540 KIAs or WIAs. While many of the wounded undoubtedly returned to front-line service, many didn’t. And yes, the DPR army has...