Four European invaders are scheduled to arrive in Chicago over the next week in an attempt to take down the coveted Arlington Million Saturday, Aug. 18. A total of nine imports from across the pond will try their luck in either the Million, the $700,000 Beverly D for fillies and mares, and the $400,000 Secretariat Stakes for 3-year-olds. All are grade I contests, with the Million also serving as the third leg of the international Emirates World Series.The globetrotting Caitano, owned by Gary Tanaka, is one of two German-based horses who will try the Million. The 7-year-old, conditioned by Andreas Schutz, has earned better than $2 million while racing in Germany, Italy, France, Canada, Dubai, Hong Kong, Singapore, Turkey, and Japan. Caitano was runner-up to Silvano, the other German coming in for the Million. Silvano is a worthy traveler, having already taken down the Singapore Cup and the Queen Elizabeth II Cup, the latter at Sha Tin in Hong Kong, where he beat Dubai Duty Free victor Jim and tonic. Silvano is trained by Andreas Wohler.Compton Bolter, who finished strongly for a fifth in last year's Secretariat, tries his hand at the Million this time around. He comes off a listed handicap win at Goodwood for trainer Gerard Butler and owner Eric Penser. Muakaad, who recently won the Meld Stakes at the Curragh at the Million distance of 10 furlongs, will be sent postward by Dermot Weld for Hamdan al Maktoum.The lone European expected for the Beverly D is Di Moi Oui, a French import. She was a dual group winner in that country at three, winning at Chantilly and Deauville. Pascal Bary trains for Franca Vittadini.Two Europeans slated for the Secretariat will remain stateside after that race to continue their careers. Analyser, who triumphed in the Britannia Handicap at Royal Ascot, will be in the care of John Gosden for the final time in the Secretariat. Aldwych, conditioned by Roger Charlton, will also remain in America after the race. Also coming in for the Secretariat are Snowstorm with Newmarket trainer Michael Bell, and Mizzen Mast, owned by Juddmonte Farms and conditioned by Criquette Head-Maarek. Mizzen Mast, winner of the group III Prix de Guiche, will have the services of Jerry Bailey in the Secretariat.