The British Establishment and much of the native Sleeveen Irish capitalist class regarded the rebellion as treason hence the reason for the appalling state murder through execution of the leaders and the frothing at the mouth insistence that they take such a course from the collaborating latter!
It is recorded that a number of soldiers were brought over from Wales to quell it and they were never told they were going to Ireland and they actually thought initially they were in France!
Analguous to the behaviour of another Evil Empire later in the 20th Century, when Soviet troops were sent to quash the Hungarian Revolution, but were told they were going to fight the Brits and the French at Suez!
Rem Ireland was the testing laboratory for colnialism and evil practices under it!