SOFAs do not have a mandatory form. A SOFA may be available as a stand-alone document or the usual soFAs terms and conditions may be included in other agreements, for example. B in a security agreement. The SOFA between the United States and the Republic of Iraq is an example of SOFA that is included in a broader agreement: «Agreement between the United States of America and the Republic of Iraq on the Withdrawal of the Armed Forces of the United States from Iraq and the Organization of their Activities During their Temporary Presence in Iraq.» This document not only sets out the legal framework within which the persons concerned will operate in Iraq, but also sets the date by which the United States will have to withdraw its armed forces. «martial law» means the part of international law governing the conduct of armed hostilities. Martial law includes international law related to the conduct of hostilities that binds the United States or its citizens, including international treaties and agreements with which the United States is affiliated, and applicable international law. In 1993, countries concluded a SOFA.104 The agreement was subsequently extended on 19 September 1994; 28 April 1995; and 29 November, 1 December and 8 December 1995. Countries concluded an agreement on the treatment of U.S. forces that visited the Philippines in 1998.105 This agreement was amended on April 11 and 12, 2006. The difference between this agreement and the sofa, originally concluded in 1993, is that this agreement applies to visits by US forces that are not stationed in the Philippines. Countries have also concluded an agreement on the treatment of personnel of the Republic of the Philippines travelling to the United States (counter-agreement).106 Persons and property covered by SOFAs between the United States and other nations include members of the United States armed forces and, in certain circumstances, personnel of private contractors working on behalf of the United States Government. In addition, SOFAs are often limited to behaviour when staff are «on duty». However, as SOFAs are peace agreements, they do not deal with the rules of war, the laws of armed conflict, or maritime laws.