with a view to ensuring that Germany may not be able to take steps outside German territory towards rearmament. Article 19 Hungary shall not acquire or manufacture civil aircraft which are of German or Japanese design or which embody major assemblies of German or Japanese manufacture or design. Article 20 Each of the military and air clauses of the present Treaty shall remain in force until modified in whole or in part by agreement between the Allied and Associated Powers and Hungary or, after Hungary becomes a member of the United Nations, by agreement between the Security Council and Hungary. SECTION II Article 21 1. Hungarian prisoners of war shall be repatriated as soon as possible, in accordance with arrangements agreed upon by the individual Powers detaining them and Hungary. 2. All costs, including maintenance costs, incurred in moving Hun- garian prisoners of war from their respective assembly points, as chosen by the Government of the Allied or Associated Power concerned, to the point of their entry into Hungarian territory, shall be borne by the Hungarian Government. PART IV WITHDRAWAL OF ALLIED FORCES Article 22 1. Upon the coming into force of the present Treaty, all Allied forces shall, within a period of 90 days, be withdrawn from Hungary, subject to the right of the Soviet Union to keep on Hungarian territory such armed forces as it may need for the maintenance of the lines of communication of the Soviet Army with the Soviet zone of occupation in Austria. 2118 TREATIES [61 STAT.
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