Marvel to the sibilant tones of the eponymous Bat, 40 seconds in on this Beasts of War video of Salute 2014. And note the themed T-shirt!
I think I deserve a certain degree of kudos for introducing the W40K crowd to the obscure 1st Century AD Roman military author Frontinus. :-) I was like a rabbit in the headlights.
Many thanks to Craig Cartmell for sending me the link.