The 'Code Name Geronimo' refers to the operation in which Osama bin Laden was killed. It was a highly secret and significant military operation. The Navy SEALs were involved in this mission to take out one of the world's most wanted terrorists. This event had a major impact on the global fight against terrorism.
The main characters were the Navy SEALs who carried out the operation. Their identities were mostly kept secret for security reasons. And of course, Osama bin Laden, who was the target of the operation.
Whether it's a true story or not depends on various factors. The filmmakers might have drawn inspiration from real incidents and then built a narrative around them. So, it's not straightforward to determine if it's completely true.
The movie Geronimo is more of a fictionalized account. While it may touch on historical figures or events, it's not a direct and accurate portrayal of a true story.
There might be some indie or less - known graphic novels with this code word. It could be something used in a military - themed or adventure - based graphic novel. You may need to dig deeper into niche comic communities or forums to find out.