Complex sentence: The Brotherhood of Saint George was a short-lived military guild founded in Dublin in 1474 for the defence of the crucial English-held territory of the Pale; for a time it was the only standing army maintained by English Crown in Ireland.
Split into simpler sentences: The Brotherhood of Saint George was a short-lived military guild founded in Dublin in 1474 for the defence of the crucial English-held territory of the Pale. For a time it was the only standing army maintained by English Crown in Ireland.