How To Write A Letter To Soldiers . Here are three simple steps to writing your letter. As much as they would like to respond and thank you for your kindness, you must remember they are in a combat zone and that they most likely will not get a chance to write back. These handwritten letters to soldiers by kids around India is the from indianexpress.com The form below will allow you to write a letter to a soldier. I know thank you doesn't come close for what you and your brothers do. It adds a touch of modern technology to help it stand out.