But there was no cause for alarm, as the manoeuvres at the Iron Bridge and at Shrewsbury Museum were simply part of a training exercise by 1st The Queen's Dragoon Guards.
About 60 to 80 men from two of the regiment's squadrons have been travelling around Shropshire, north Wales and Chester as part of training in radio communication.
Captain Alex Dumont said: "We're practising deploying at reach. What that means is at distance from a HQ unit. It is working on long distance communication and control."
The teams are in Shropshire to test their skills in a rural area but have been heading to Chester to test it in a more urban environment.
During their rides around the county, one of the squadron's Jackal armoured vehicles stopped for a quick photograph, next to Iron Bridge in Telford.
And the entire group posed outside Shrewsbury Castle where the QDG were given the opportunity to look around the museum.
The squadrons will return to Shropshire this weekend where they will change places with another group who will then take part in their training.
The 1st The Queen's Dragoon Guards is the Cavalry Regiment of Wales and the border counties, including Shropshire, Herefordshire and Cheshire. It is based at Robertson Barracks in Swanton Morley, Norfolk.
The light cavalry regiment was given the Freedom of Shrewsbury in December 2014.