PCT CTLR EXPERIENCED LOSS OF SEPARATION DURING MIL FLY-BY OP.

Narrative

ACFT #1 WAS ESTABLISHED ON V93 SEBOUND. ACFT #2 WAS ESTABLISHED ON LOA RADIALS NWBOUND. BOTH ACFT WERE AT 6000 FT. LCL PROCS PUT BOTH ACFT OPPOSITE DIRECTION AT THE SAME ALT; AND ON INTERSECTING PATHS. HVY TFC IN THE SECTOR; COMBINED WITH A FLT OF F18'S PREPARING TO 'FLY-BY' THE MIL TOOK UP TOO MUCH OF MY ATTN. THE F18'S WERE IFR WAITING FOR THE 'FLY-BY' AND I HAD DIFFICULTY FINDING SOMEWHERE TO HOLD THEM. WHILE ATTENDING TO THIS; ACFT #1 AND ACFT #2 CAME WITHIN CLOSE PROX OF EACH OTHER. ALT FOR DIRECTION OF FLT IS ONE OF THE MOST BASIC TOOLS FOR SEPARATING ACFT. A PROC MANDATED BY SOP THAT PUTS ACFT OPPOSITE DIRECTION AT THE SAME ALT IS A MAJOR CONTRIBUTING FACTOR. ADDITIONALLY; THE WASHINGTON AREA ADIZ HAS CAUSED MORE AND MORE ACFT TO FILE IFR; EVEN THOUGH THE WX IS EXTREMELY VFR; OUT OF PLT'S FEARS OF A VIOLATION. THIS HAS SIGNIFICANTLY INCREASED THE WORKLOAD IN THIS SECTOR. I'VE BEEN A PLT FOR 28 YRS AND A CTLR FOR 22 YRS; AND THE HAVOC THIS ADIZ HAS BROUGHT TO BOTH FLYING; AND ATC IS UNLIKE ANYTHING I'VE EVER SEEN.