Seeking Assistance With Translation of German, WW2 Era Polizeiausweis Identified to Combat Regiment Police Oberwachtmeister

Good Morning Gentlemen,  I've recently been fortunate enough to have obtained an somewhat infrequently found Polizeiausweiss, though not the more commonly observed Blue variety, as issued to the older, Reserve Policemen. This particular type is the Green version, as issued to the younger age range, Ordungspolizei, many of which were assigned to the Police Combat Battalions / Regiments & delegated primarily for Anti-Partisan operations, along with of course some much more nefarious tasks. In addition to the above noted assignments, they were frequently used for 'Front Line' Combat related purposes. This Oberwachmiester was initially a 'City / Town' Policeman stationed in Salzburg, Germany [ He appears to have started with the Salzburg Schutzpolizei as of 23 February 1940 ] Later, I believe during 1943 he was assigned to the II / 19th SS Polizei Regiment, & later to the III / 10th SS Police Regiment, where he was K.I.A. on 18 March 1944, in what appears to a Town in Russia. ( Although I have a suspicion that it could have been in Poland ? ) What I would really like to determine is where was, or is his Burial location, & or Gravesite, as I've been having a difficult time attempting to locate it on my own ? ALSO, on one of his Documents which I have provided here, there appears to be some mention of a Grave Location / Burial Place, yet as I don't understand very much German at all, I simply can't determine its meaning !  

I will be EXTREMELY APPRECIATIVE for ANY information pertaining to this individual, & especially of course his Burial or Grave Location !! THANK YOU !!

                    Best regards,    Dom P.   /   'dpast32'

@>>>  LEOPOLD JOSEF FRIEDRICH,  1915 - 1944

BIRTH: 15 MAI 1915 • SALZBURG, GERMANY

RANK:  Oberwachmiester der Polizei

DEATH: K.I.A. ~ 18 MÄRZ 1944 / 18 MARCH 1944 • Mÿnowce, Russland - or - Mlynow, Poland