Battle Group Builder is a free to use force creator program you can use to make up your Battle Group Overlord armies.
From the announcement:
A community effort free on-line force builder has been released for the Battle Group series of WW II games from Iron Fist Publishing.
The builder comes with complete support for the 17 force lists from both last year’s ‘Battle Group Kursk’ and the just released ‘Battle Group Overlord’.
As well as tracking points costs and force orginization restrictions the builder can produce a handy printable roster to aid play