To foster military unity, Collins and the IRB established an "army re-unification committee", including delegates from pro- and anti-Treaty factions. The still-secret Irish Republican Brotherhood continued to meet, fostering dialogue between pro- and anti-Treaty IRA officers. In the IRB's stormy debates on the subject, Collins held out the Constitution of the new Free State as a possible solution. Collins was then in the process of co-writing that document and was striving to make it a republican constitution that included provisions that would allow anti-Treaty TDs to take their seats in good conscience, without any oath concerning the Crown.