Which branch must be a citizen for 7 years?

Could you please clarify which specific context or organization you are referring to when you ask, "Which branch must be a citizen for 7 years?"? In general, there are various entities and institutions that may require citizenship for a certain duration, such as government agencies, military branches, or even some professional organizations. However, without a specific context, it's difficult to give a precise answer. Assuming you're referring to a government or military requirement, it's worth noting that different countries and branches have different citizenship requirements. For instance, some countries' military may require a certain number of years of citizenship before one can serve in a specific branch or hold a certain rank. Similarly, some government positions may also have citizenship requirements. Could you please provide more context or specify the country and institution you're referring to? That way, I can provide a more accurate and relevant answer to your question.