[Footnote 436: This becomes quite apparent from the discussion of the subject at the First Peace Conference; see Martens, _N.R.G._ 2nd Ser. XXVI. p. 465; and _Land Warfare_, § 234.] [Sidenote: Treatment of Admitted Flag-bearers.] § 222. Bearers of flags of truce and their parties, when admitted by the other side, must be granted the privilege of inviolability. They may neither be attacked nor taken prisoners, and they must be allowed to return safely in due time to their own lines. On the other hand, the forces admitting enemy flag-bearers need not allow them to acquire information about the receiving forces and to carry it back to their own corps. Flag-bearers and their parties may, therefore, be blindfolded by the receiving forces, or be conducted by roundabout ways, or be prevented from entering into communication with individuals other than those who confer officially with them, and they may even temporarily be prevented from returning till a certain military operation of which they have obtained information is carried out. Article 33 of the Hague Regulations specifically enacts that a commander to whom a flag of truce is sent "may take all steps necessary to prevent the envoy taking advantage of his mission to obtain information." Bearers of flags of truce are not, however, prevented from reporting to their corps any information they have gained by observation in passing through the enemy lines and in communicating with enemy individuals. But they are not allowed to sketch maps of defences and positions, to gather information secretly and surreptitiously, to provoke or to commit treacherous acts, and the like. If nevertheless they do any of these acts, they may be court-martialed. Articles 33 and 34 of the Hague Regulations specifically enact that a flag-bearer may temporarily be detained in case he abuses his mission for the purpose of obtaining information, and that he loses all privileges of inviolability "if it is proved beyond doubt that he has taken advantage of his privileged position to provoke or commit an act of treachery." Bearers of white flags and their party, who approach the enemy and are received, must carry[437] some authorisation with them to show that they are charged with the task of entering into negotiations (article 32), otherwise they may be detained as prisoners, since it is his mission and not the white flag itself which protects the flag-bearer. This mission protects every one who is charged with it, notwithstanding his position in his corps and his status as a civilian or a soldier, but it does not protect a deserter. The latter may be detained, court-martialed, and punished, notice being given to his principal of the reason of punishment.[438] [Footnote 437: Article 32 of the Hague Regulations confirms this customary rule by speaking of an individual who is "authorised" by one of the belligerents to enter into communication with the other.] [Footnote 438: See Hall, § 190.]