In Belgium Britain declared war on Germany on 4 August 1914. Stobart travelled to
Brussels on 18 August 1914, arriving on the evening of the 19th, and sent a cable instructing the unit to come out immediately. They immediately started converting university buildings that had been allocated for use as a hospital by her unit on the 20th. At 2pm, she followed a crowd to the Boulevard des Jardins Botaniquese, and witnessed the German Army making a triumphant entry to and taking possession of the capital of Belgium, foolishly taking photos. Realising the situation, Stobart tried to find means to communicate with her unit. After persistent effort, Stobart was able to gain a passport from the German General, to
Venlo in Holland, leaving at 6 p.m. on 24 August, reading
Louvain (Leuven) at 8pm, and travelling on the next morning at 5 a.m. (Louvain was destroyed the following day) to Hasselt at 8 a.m. After taking breakfast the motorcade would not restart, and upon repeated inspection of their passports, they were arrested as spies, surrounded by soldiers who were ordered to cock rifles, fix bayonets, and shoot if they moved or talked to each other. After an hour they were marched to a hotel, their luggage was searched and they themselves were strip searched, before being marched to the railway station at 5 p.m. along with eighteen members of the
Garde Civique and six criminals, and loaded onto a dirty coal truck, which traveled until around 7 p.m., arriving in
Tongres. There, an anti-English commanding officer whom Stobart labelled the 'devil-major' stated that a map and camera were enough for them to be condemned as spies, for whom the fate was to be shot within twenty-four hours. While trying to explain their case, Stobart was shocked by the comment, "You are English, and whether you are right or wrong, this is a war of annihilation." They spent the night, after arguing to not be separated as women were not allowed to sleep with men (the party consisting of her husband, the chaplain and a poor Belgian chauffeur who had been caught up in the affair). A sympathetic officer, who was married to an English woman, entered the room, and promised to do everything in his power to help, in return for conveying to his wife that all was well for him. He was interrupted and sternly removed by the 'devil major'. The following morning, the devil major, frustrated by intervention in his planned dawn entertainment of an execution, irately made arrangements to transfer the four prisoners to
Cologne to be tried for high treason. During the journey, the news of their transfer proceeded them, and at
Liège they were removed from the train, and the officers who did so had in mind to try the English 'spies' themselves. As the train was to leave, Stobart was able to compel one of their guards to show the officer the orders for them to be transferred to Cologne. On production of the papers, the officer resisted, and allowed them to re-board the train, but crucially, without their papers which were the proof of their story. Their journey ended in
Aachen (Aix-la-Chappelle) at 8 p.m., and they were marched to a barracks prison and presented to a judge separately. The only evidence that remained was a cutting from the
Morning Post which stated "Mrs St. Clair Stobart had that day left for Brussels at the invitation of the Belgian Red Cross, to establish a hospital for French and Belgian soldiers." Before being once again removed to the prison for the night. The following evening, she was brought before the judge in the prison, who offered her to board in a hotel, if she gave her word not to attempt to escape, while he investigated her statements. Stobart answered that she would, only if her companions were extended the same courtesy, to which she was told that they already had done so, and was courteously taken to the hotel, and allocated an officer to supervise their parole. After some confusing telegrams, their innocence was decided, and upon asking of their desired destination, the judge allowed them to return to London, via
Flushing. On return to London, Stobart then took her unit to the
siege of Antwerp, in response to a request received via
Lord and Lady Esher. Following the exploits in Antwerp, Stobart established a hospital at the Château Tourlaville near
Cherbourg, which operated during 1914–1915, but, bored of the tedious work away from the front, left the hospital she had established and sought a new challenge.
In Serbia First Serbian-English Field Hospital As a result of the war and its effects,
epidemic typhus broke out in Serbia, causing the death of around 150,000 people including about half of the doctors in the country. The unit was to be called the First Serbian-English Field Hospital (front).
Later travels After America entered the war in April 1917, Stobart travelled to North America - the United States and Canada - for a lecture tour arranged through the British
Ministry of Information, followed by a lecture tour in Ireland in late 1918. ==Spiritualism and later life==