So, by default, the game assigns you a name like 'Cowboy_xxxxx' (where xxxxx is a random number and letter combination). To join our alliance, you will need to change this to something meaningful. Failure to do so could result in you being kicked from the alliance. So click the 'Read More' button for more instructions on how to do this.
Step 1: Click to go into your town.
Step 2: Click the force/profile button
Step 3: Click the Name change indicator (as outlined in red below)
Step 4: Click on the name field (indicated by the blue box) and set a new name
Step 5: Click the Change button (indicated by the red box above) to complete the name change. Accept any popup box to use your rename item.