Such an inspiring design - how many minutes did it take the two designers to come up with this? 
From the RM website, the designers say:
“We started with extensive online image research, leafing through books and libraries of visual material from the period. Then we spent time delving into the Imperial War Museums’ archives and picking the brains of the curators who work there. It was a fascinating, and moving, experience. It’s difficult for those of us who’ve known nothing but peace to properly imagine what the wartime generation went through.”
So, after all that research they came up with two intersecting words. Unbelievable! Hope they gave their commission to charity.