Both Tessio and Clemenza had substantial regimes of made men and associates who ran the rackets that generated the cash for the Corleone family. In time of war, those men could be taken out of their regular livings to pull guard duty at the Corleone compound and to "go to the mattresses," as we saw later. There were plenty of 'em. You heard Sonny order Tessio to send "50 good men" to guard the compound. Later he told Michael that "a hundred button men" were on the street looking for Sollozzo.