There are many parallels between Bridge and war: attack, DMZ, defend, pre-emptive strikes, set, give-up, etc. On the deceptive front there are similar terminology's: camouflage, bluff showing strength, feint attacks, ambushes, cover retreats, etc. These all have their counterparts at the Bridge table. (Weapons of mass 
destruction are not usually used during Bridge games.)
        As in any war there might occur a situation where it is either Victory or Death. This is when your side has the balance of power. That is, more points than your opponents. Then you or your partner must either bid or double. Do not let the enemy play in an un-doubled contract. 
        For some hands you do not want to trump anything, but you want to make the Declarer trump. That is like what General George Patten said: "You win a war not by dying for your country, but by making the other SOB die for his." 
        Some of the techniques that are deployed during the game to set the stage for your Big Bridge Bamboozle are: false carding; winning a trick with a high card instead of winning with a lower card; play a high card when you have a lower one; make a discard at a confusing time; and refusing to win a trick when it can be won. These just are some of the Deceiver's tools of the trade that implants information (really misinformation) in the minds of those you wish to defeat. Do not be surprised if your enemy uses 
these tactics against you. So be AAA - Awake, Aware, Alert.
        Also remember that in any battle that you might not win But you only lose, not by being defeated, but by quitting. So keep on playing Bridge and good luck - and don't take any