The R6 tactics app is a really good app which is available on iOS and android. It is the rainbow six maps which you can annotate and put the operator symbols down.
What do you guys think of my 2nd floor Consulate strat/setup? (I call it the 4.0) : r/Rainbow6
A potentially viable Bar/Stock strat for Clubhouse : r/R6ProLeague
FULL Team Strat For Theme Park Armory & Throne - Rainbow Six Siege - YouTube
DEFENDING Penthouse&Theatre on Coastline - YouTube
Useful Links for Rainbow Six Siege | R6SIEGECENTER.COM
Bank | Maps | Tom Clancy's Rainbow Six Siege | Ubisoft (UK)