BUCHA, Ukraine – At the end of March, when Russian troops retreated from Bucha, a leafy suburb near Ukraine's capital, they left reminders of their deadly occupation for all the world to see. Bodies were strewn in the streets. Quaint houses were reduced to rubble. A field near the town's church had become a mass grave.
Now, as Ukrainian and international prosecutors begin the work of identifying those responsible for the alleged atrocities, Reuters has examined the aftermath of Russia's hasty retreat — and found vital clues to the identities of individual Russian soldiers and military units present during the bloody occupation.