Guerilla/terrorist forces are suppressed by the tactics we are using, but (historically) only when occupier v guerilla numbers reach a ratio of at least 7-1. The recommended level is 10-1.
There was an article the other week which used those figures ,but it was a ratio at 10-1 of the population not the guerillas , it noted that in South Armagh the British army was at a ratio of 8-1 yet couldn't even drive on the roads . When you add police numbers to the army it changes the ratio even more