DLR and DASA of Germany as well as CNES and SEP of France have decided to collaborate on oxygen/hydrogen high-pressure combustion. In order to promote and intensify a common program the novel research and test facility P8 for LO(2)/GH(2) high-pressure rocket combustors is presently being built at the DLR in Lampoldshausen. It provides for combustion chamber pressures up to 30 MPa at a maximum total propellant mass flow rate of 9.5 kg/s. The P8 test bench will be jointly financed, operated and utilized. The paper describes the design of P8, its instrumentation and combustion diagnostics as well as the organization of this international cooperation. Finally, the currently planned research program on high-pressure combustion will be discussed.