Three men discussed using suicide vests, rucksack bombs and guns to kill British soldiers, a court has heard.
Irfan Naseer, Irfan Khalid and Ashik Ali, all of Birmingham, deny conduct in preparation of terrorist acts.
Prosecutors told Woolwich Crown Court the three men had "glorified" the 9/11 attacks and that Mr Ali made the claim about the plan to attack soldiers during a police interview.
But Mr Ali later told the court he did not intend to carry out such an attack.
The soldier attacks were said to be planned for April or May 2012.
The court has also heard the men were planning a bombing campaign which could have been bigger than the 7 July London attacks had they succeeded.