The phrase "and ordered to join" is correct and usable in written English.
It can be used in contexts where someone is instructed or commanded to become part of a group or activity.
Example: "After the meeting, the team members were informed that they were to be and ordered to join the new project task force."
Alternatives: "and instructed to join" or "and directed to join".
In 2010, Detroit Hooters waitress Cassandra Smith was put on a 30-day probation by store managers for being too heavy -- she weighed 132 pounds and stood 5'8" -- and was ordered to join a gym.
Spencer and Venerable, ordered to join the attack, were unable to take up their intended positions due to the absence of wind, Venerable losing its mizen-topmast to French shot as Hood attempted to wear his ship around.
He assisted in the capture of Bastia, and was then ordered to join off Nice.
For the first time, the newly created Viet Cong 273rd and 274th Regiments was ordered to join the 271st and 272nd Regiments on the battlefield; their objective was to destroy the regular units of the South Vietnamese military, and eliminate the strategic hamlets to enlarge what North Vietnam viewed as 'liberated zones'.
Goebbels and his entourage were ordered to join Hitler in his subterranean air raid shelter – the so-called Führerbunker – during the last days of the war.
On 6 April, all twenty available aircraft of Nos. 2 and 18 Squadrons were ordered to join B-24 Liberators of No. 82 Wing in an assault on a Japanese convoy that included the cruiser Isuzu.
His first duties were limited to carrying despatches and passengers between Toulon and Genoa, after which he was ordered to join Captain Sutherland of, who was commanding a squadron blockading Genoa.
Buckner was virtually useless to the Confederacy here, and on April 28, he was ordered to join Edmund Kirby Smith in the Trans-Mississippi Department of the Confederacy.
Regensburg and her torpedo boats were ordered to join the attack, but the I Scouting Group had passed in front of his ships, and he realized the British had turned away, which put them out of range of his torpedoes.
By now Villeneuve had put into Cadiz and Calder's force was ordered to join the hastily assembled British fleet under Vice-Admiral Cuthbert Collingwood, that was blockading the Franco-Spanish fleet at Cadiz.
