A tactical report is a type of report on a current military situation.
In 2375, Chakotay, while posing as Jason Hayek to infiltrate the training simulation on Terrasphere 8, used a tactical report due in the morning as an excuse to finish his date with "Valerie Archer". (VOY: "In the Flesh")
In 2376, Chakotay presented Seven of Nine with the latest tactical reports from Tuvok, but Seven was distracted by concerns about her ability to instruct the Borg children aboard the USS Voyager. (VOY: "Ashes to Ashes")