This activity gives students the opportunity to experience code-making and code-breaking for themselves, giving them a small taste of what American cryptographers experienced during World War II. During this activity, students will be divided into two teams: the Allies and the Axis Powers. Each team will have the opportunity to create their own system of code in an effort to send a secret message that cannot be decoded by the enemy. The ability of teammates to work together in creating a code that cannot be broken will determine whether they will experience the thrill of victory or the agony of defeat. This is a great activity to get students involved in a lesson in which students take turns trying to “sink” or “save” each side’s ships!