My H sent a text on ours saying 'Although this is not where we thought we would have been X years ago today, I still remember' (the rest was me walking down the aisle but you could fill in something different of course).
It acknowledges the day but its not saying 'Happy Anniversary' since its not exactly a happy day being apart.
H:41 W:44 D1:19 D2:17 S:13 D3:7 T:20 M:18 Bomb:1/5/11 Sep:2/18/11 No D filed yet; just threats