▁that ▁" a ▁large ▁number ▁of ▁execution s ▁would ▁[ … ] ▁sow ▁the ▁se eds ▁of ▁last ing ▁trouble ▁in ▁Ireland ". ▁After ▁Con n olly ' s ▁execution , ▁Max well ▁bow ed ▁to ▁pressure ▁and ▁had ▁the ▁other ▁death ▁sentences ▁comm uted ▁to ▁pen al ▁serv itude . ▁ ▁Most ▁of ▁the ▁people ▁arrested ▁were ▁subsequently ▁released , ▁however ▁under ▁Reg ulation ▁ 1 4 B ▁of ▁the ▁Def ence ▁of ▁the ▁Real m ▁Act ▁ 1 9 1 4 ▁ 1 , 8 3 6 ▁men ▁were ▁intern ed ▁at ▁intern ment ▁cam ps ▁and ▁pr isons ▁in ▁England ▁and ▁Wales . ▁Many ▁of ▁them , ▁like ▁Arthur ▁Griff ith , ▁had ▁little ▁or ▁nothing ▁to ▁do ▁with ▁the ▁R ising . ▁Cam ps ▁such ▁as ▁Fr ong och ▁intern ment ▁camp ▁became ▁" Univers ities ▁of ▁Revolution " ▁where ▁future ▁leaders ▁including ▁Michael ▁Collins , ▁Ter ence ▁Mc Sw ine y ▁and ▁J . ▁J . ▁O ' Con nell ▁began ▁to ▁plan ▁the ▁coming ▁struggle ▁for ▁independence . ▁ ▁Sir ▁Roger ▁Cas ement ▁was ▁tried ▁in ▁London ▁for ▁high ▁tre ason ▁and ▁h anged ▁at ▁Pent on ville ▁Pr ison ▁on ▁ 3 ▁August . ▁ ▁British ▁at roc ities ▁After ▁the ▁R ising , ▁claims ▁of ▁at roc ities ▁carried ▁out ▁by ▁British ▁troops ▁began ▁to ▁emer ge . ▁Although ▁they ▁did ▁not ▁receive ▁as ▁much ▁attention ▁as ▁the ▁execution s , ▁they ▁spark ed ▁out rage ▁among ▁the ▁Irish ▁public ▁and ▁were ▁raised ▁by ▁Irish