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This process indicates and provides two direct steps for the manufacture of military-grade organophosphorus, such as G-series agents and the most unstable tammelin esters, following the equation, one mole of phosphoric acid is mixed in dichloromethane and reacted with a two mole of thionyl chloride with excess of a corresponding alkyl halide (isopropyl chloride, pinacolyl chloride, cyclohexyl chloride, such as other halides, iodide, bromide, fluoride has no efficacy and etc.) at the end of the emission of Hydrogen Chloride the Alkyl dichlorophosphate dissolved is directly reacted with 1 mol of Sodium Fluoride and a metal corresponding with methyl radical, at the end of the reaction the corresponding product obtained is directly distilled in vacuo and redistilled for the removal of the solvent.