For at least the Steam version of Earned in Blood, the 1.03 Skirmish Maps are missing and the official patcher won't work due to the game technically being 1.03, here is a download for the maps.
Thanks to "QuietPerson" on Steam for supplying the map files.
Instructions:
Simply copy and paste the folders into your EIB Installation folder, replacing files when prompted.
This adds 3 more Skirmish maps:
"Across the Marsh" and "Into the Farm" for the Allies.
And "Flanked from Above" For the Axis Skirmish mode.