Jim, of course Germany was Ireland's gallant ally in Europe. Germany had sent arms in the Aud (pretty terrible guns, but guns nevertheless), and did shell England's east coast a little bit during the Rising.
Germany was Ireland's ally in the Rising, just as France (then an enemy of the English colonisers) was America's ally in the American Revolution. Washington was using an enemy of his country's enemy in exactly the same way that Pearse was; if the English had won, Washington et al would have been executed on exactly the same charges and with exactly the same drumhead court martial as happened in 1916.
And I'm sure that the people here who feel aggrieved at Ireland winning independence through a revolution to throw off a British occupation feel exactly the same about the previous American revolution.