'I saw our standard bathed in blood...'
I was rereading the White Dwarf relating the launch of the 4th Edition Codex: Space Marines (that'd be November 2004) and I found this lovely picture in the battle report pitting Graham McNeill's Ultramarines against Pete Haines' orks.
Long story short, Tigurius surprised the orks by charging them first with his command squad. He and his apothecary were the last to fall after bogging down most of Big Boss Razzekai's forces long enough for the Ultramarines to secure victory.
(Tigurius lived because "it ain't dead 'til it's eaten," as the ork saying goes.)